[2017SSCHIRO]

Originally Posted by syntaxx7x

I have a 2017 2SS Fifty A8..

Just bought it about 3 weeks ago, used (already had about 6k on the ODO)...

Recently it has started to shudder like everybody is talking about.. at about 1200 - 1900 rpm, around 55 mph - 65 mph, giving it about 10%- - 15% throttle... I was going to wait till my first oil change.. Looks like i have about 77% oil life left... Should I go ahead and wait.. or sched for it to be taken in asap??

If I were you I would take it in to have it checked. At least documented if things gets worse regardless of warranty.

[whitelightning011]

Originally Posted by syntaxx7x

I have a 2017 2SS Fifty A8..

Just bought it about 3 weeks ago, used (already had about 6k on the ODO)...

Recently it has started to shudder like everybody is talking about.. at about 1200 - 1900 rpm, around 55 mph - 65 mph, giving it about 10%- - 15% throttle... I was going to wait till my first oil change.. Looks like i have about 77% oil life left... Should I go ahead and wait.. or sched for it to be taken in asap??

Take it in. The process from start to finish can take weeks, depending on how busy the service center is.

[wrankin]

Follow! Mine started doing this a few weeks ago.

Bill

[2017SSCHIRO]

Originally Posted by KingLT1

call circle D and put a good converter in it.

2016 should be under warranty?

[k818mn1]

My A8 started the shuddering last week at 16,000 miles. I found this thread, took the car into the dealer's Service dept on Friday and told them about the TSB for this issue. they have booked the car in for the triple flush per the TSB tomorrow. Hoping it fixes the issue without having to change the TC. I already had the groaning diff replaced last year, and the transmission cooler pipework recall earlier this year.

[wrankin]

Originally Posted by k818mn1

My A8 started the shuddering last week at 16,000 miles. I found this thread, took the car into the dealer's Service dept on Friday and told them about the TSB for this issue. they have booked the car in for the triple flush per the TSB tomorrow. Hoping it fixes the issue without having to change the TC. I already had the groaning diff replaced last year, and the transmission cooler pipework recall earlier this year.

Same problems with the A8 shuddder and diff groan. At dealership now for the shudder. They are waiting for good weather to drive it with the computer hooked up to it. Groan still exists after two flushes but since the weather hasn't been that cold can't compare to what it was. Dealership now claims this is a normal noise. I think my trans cooler pipe recall was just cutting the head off of a bolt.

Bill

[wrankin]

Originally Posted by wrankin

Same problems with the A8 shuddder and diff groan. At dealership now for the shudder. They are waiting for good weather to drive it with the computer hooked up to it. Groan still exists after two flushes but since the weather hasn't been that cold can't compare to what it was. Dealership now claims this is a normal noise. I think my trans cooler pipe recall was just cutting the head off of a bolt.

Bill

The service manager was able to duplicate the shudder. They replaced the filter, flushed the trans fluid replacing it with synthetic. I am to drive the car 200 to 300 miles and report back with the results. I hope the problem is solved

Bill

[X-Factor]

I just found my 50th is doing the same thing, just turned 5,600 miles yesterday. :( Guess this warrants a trip to the dealer.

[syntaxx7x]

update.....

Took my car to dealer.. he took it out for 10 min.. came back and said Torque Conveter.. so now I'm in a loaner until they replace it.

Quick question if anybody knows: If they are replacing the TC's in these cars.. what part # are they replacing them with.. or are they just putting the same part back in..?? Meaning it might start acting up again.. Hope not..

[killervette666]

My understanding is that it is Part #24280631 TC, and that that's the third version of the TC that GM has had on the LT1 and the latest, the other prior 2 version required immediate replacement at shudder, but the newest version required triple flush first (based on my research/understanding...would love for GM to chime in...)

Originally Posted by syntaxx7x

update.....

Took my car to dealer.. he took it out for 10 min.. came back and said Torque Conveter.. so now I'm in a loaner until they replace it.

Quick question if anybody knows: If they are replacing the TC's in these cars.. what part # are they replacing them with.. or are they just putting the same part back in..?? Meaning it might start acting up again.. Hope not..

[EFI Tuning]

Originally Posted by wrankin

The service manager was able to duplicate the shudder. They replaced the filter, flushed the trans fluid replacing it with synthetic. I am to drive the car 200 to 300 miles and report back with the results. I hope the problem is solved

Bill

It fixed mine for about 5000 miles then came back. The A8 is great but they screwed this up royally design wise.

[shrubby]

Mine is currently in the shop getting getting the torque converter replaced. I took it in and they diagnosed it immediately without any info from me. Should get it back this week

[wrankin]

Originally Posted by wrankin

The service manager was able to duplicate the shudder. They replaced the filter, flushed the trans fluid replacing it with synthetic. I am to drive the car 200 to 300 miles and report back with the results. I hope the problem is solved

Bill

I put lots of miles on the car this weekend, and so far, so good. I will be keeping an eye on things since others have reported it eventually came back.

Bill

[Darth Martel]

The issue can be tuned out. GM will not do it because it will affect mpg rating so, we're on our own.